Glass-rolling machine.



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Patented May 7, |90I.

J. T. HUUGH. GLASS ROLLING MACHINE.

(Application flled Apr. V25, 1900.)

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JOHN T. HOUGH, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR OF ONE-HALF 'IO JOHNA. HARPER, OF SAME PLACE.

GLASS-ROLLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 673,837, dated May 7,1901.

Application led April 25, 1900.

To all wiz/0111, zt may concern:

Be it known that I, JOHN T. HOUGH, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a new andusefullmprovement in Glass-Rolling Machines, of which the following is afull, clear, and exact description, reference being had to theaccompanying drawings, forming part of this specication, in which-Figure 1 shows in top plan view a glassrolling machine constructed inaccordance with my invention. Fig. 2 is a side elevation thereof, partlyin vertical section. Figs. 3, 4, and 5 are vertical cross-sections onthe lines III III, IV IV, and V V, respectively, of Fig. 1.

ln the drawings, 2 represents the table on which the glass is cast androlled. It may be of any suitable construction, and may be heated in anyconvenient manner in order to bring it to the proper temperature forreceiving the glass.

3 3 are parallel guide-rails at the sides of the table, adapted to guideand support the bearings of the roll 4. These bearings are' preferablyconstituted by blocks 5 5l, containing antifriction balls or rollers 6,within which the journals 7 of the roll are contained, and may besupported by antifriction-rollers 8, enabling them to be moved freelyalong the guideways. The lower blocks 5' are made integral with or fixedto rack-bars 9. These rack-bars have bearings at the upper end ofstandards 10 and mesh with pinions 11, driven by gear-wheels l2 on ashaft 13, which derives its power from a suitable driving wheel orpulley 11i. When said shaft is driven, the rack-bars are movedlongitudinally, the bearings of the roller are carried along theguide-rails 3, and the roll is moved over the table. The thickness ofthe sheet of glass is regulated by adjustment of the guide-rails 3vertically, which determines the vertical distance between the roll andthe surface of the table. This adjustment is effected with greatprecision by the following mechanism: The guide-rails 3 are supported bystandards 15 15, which are adapted to slide vertically in the bearings16 and are provided 5 o with adjusting screw-shafts 17. These screw-Serial No. 14,283. (No model.)

shafts are held rotatably to the table structure by collars 18, and areprovided with bevel gear-wheels 19, which mesh wit-h pinions 20 onshafts 2l, and a like mechanism is provided for the standards 10, whichcarry the bearing of the rack-bars. All of these shafts are in gear witha worm-shaft 22, provided with a hand-wheel 23, by which it may berotated, enabling the standards to be moved vertically to a uniformextent and the 6o guide-rails'3 to be moved up or down with a parallelmotion. A very accurate adj ustment, within a small fraction of an inch,may thus be obtained.

The extent of the vertical adjustment may be determined by a gagecomprising a graduated bar 24, fixed to one of the guide-rails 3, andthis adjustment may be effected not only prior to the rolling of a glasssheet, but, if desired, during the rolling operation.

In the use of my invention a mass of molten, glass is cast upon thetable in front of the roller, and then by driving the shaft 13 thebearings of the roller can be moved along the guide-rails and the rollercaused to travel over 7 5 the table and to spread the glass out in theform of a sheet. As the roller moves along the guide-rails, and as theserails are held in preferably parallel position, a sheet of very uniformthickness is obtained, and the glass 8o produced by reason of themovement of the bearings of the roller over the table will be of verysmooth surface as compared with the product of rolling mechanismheretofore used, in which the roller is traversed by power ap- 8 5 pliedto its periphery by hand or chains or otherwise and without any guides.

The mechanism is such that the roller will `give uniform pressure to theglass Whether it be moved rapidly or slowly.

Within the scope of my invention as defined in the claims changes in theform and construction of the parts may be made by the skilled mechanic,since l. Glass-rolling apparatus comprising a table, a roll havingbearings mounted on guides extending parallel with the table alongsubstantially the entire working face of the table, said bearings beingmovable along the 10o bars secured to the-bearings, and gearing by whichthe rack-bars may be moved; substan tially as described.

4:. Glass-rolling apparatus comprising a table, guides extending alongsubstantially the entire Working face of the table, roll-bearingsmounted thereon, and vertically-adj ustable standards for the guides;substantially as described.

5. Glass rolling apparatus comprising guides, a roll having slidingbearings mounted thereon, bars by which the bearings are moved,standards for the guides and for the bars, and adjusting mechanism byWhich the standards may be adjusted; substantially as described.

6. Glass rolling apparatus comprising guides, a roll having slidingbearings mounted thereon, bars by which the bearings are moved,standards for the guides and for the bars, and adjusting mechanism bywhich the standards may be adjusted, said adjusting mechanism comprisingadjusting-screws and gearing by which the several screws are conanected.; substantially as described.

In testimony whereof I have hereunto set my hand.

J. T. HOUGH.

Witnesses: v

THOMAS W. BAKEWELL, J. A. HARPER.

